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Shield segment posture calculation method

A calculation method and technology for shield segments, which are applied in directions such as navigation, instrumentation, surveying and mapping, and navigation, can solve problems such as being unsuitable for large-scale development and large workload, and achieve time-saving and labor-intensive, fast computing, and computational high precision effect

Active Publication Date: 2015-04-29
CHINA RAILWAY SHANGHAI ENGINEERING BUREAU GROUP CO LTD
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  • Abstract
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  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, the detection of the posture of the shield segment generally uses the detection ruler to measure the coordinates, and then uses CAD to obtain the posture of the segment according to the coordinates. This method has a large workload and is not suitable for large-scale development.

Method used

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Embodiment

[0024] Embodiment: This embodiment specifically relates to a method for calculating the posture of a shield segment during shield tunneling. The calculation method can use the coordinates collected by the detection ruler to quickly calculate the mileage, lateral deviation, and elevation deviation of the collection point. To check the segment posture.

[0025] In this embodiment, the calculation method of the shield segment attitude specifically includes the following steps:

[0026] (1) if Figure 2-4 As shown, the curve in the figure is the three-dimensional axis of the tunnel, the dot is the feature point on the three-dimensional axis, and the triangle point is the first collection point; there are several feature points with known coordinates at equal intervals on the three-dimensional axis of the tunnel 1, 2, 3...n..., the coordinates of each feature point are (x 1 ,y 1 ,z 1 ), (x 2 ,y 2 ,z 2 ), (x 3 ,y 3 ,z 3 )...(x n ,y n ,z n )…;

[0027] Such as Figure ...

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Abstract

The invention discloses a shield segment posture calculation method. The calculation method comprises steps as follows: a plurality of feature points 1, 2, 3,...n with known coordinates are distributed on a three-dimensional axis of a tunnel at equal intervals; calculation is performed according to coordinates of collecting points, corresponding mileage of the collecting points is worked out according to distance comparison, and lateral deviation and elevation deviation of the collecting points are worked out according to the cosine law and are the posture of a shield segment. The method has the advantages that the mileage, the lateral deviation and the elevation deviation of the collecting points can be rapidly back calculated according to coordinates collected by a detecting ruler, time is saved, and the labor intensity is reduced; the calculation speed and the calculation accuracy are high, and a conventional working mode for calculating deviation through CAD (computer-aided design) is avoided.

Description

technical field [0001] The invention belongs to the technical field of shield tunnel construction, and in particular relates to a calculation method for the posture of a shield segment. Background technique [0002] With the continuous development of cities, the utilization rate of urban underground space continues to increase. In order to meet the speed of urban development and improve the efficiency of personnel travel, major cities are vigorously developing subway public transportation. [0003] The shield method is a construction method that uses a shield machine to build a tunnel below the ground. The shield machine is equipped with a propulsion mechanism, a soil retaining mechanism, an unearthed transportation mechanism, a lining segment installation mechanism and other components in a shield shell that is consistent with the shape of the tunnel. It is a special machine for tunnel excavation. Using this method to build tunnels, the buried depth can be very deep, and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01C21/00
CPCG01C21/00
Inventor 商科军程文锋高冰李林吴文奇何邦亮夏云
Owner CHINA RAILWAY SHANGHAI ENGINEERING BUREAU GROUP CO LTD
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